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If you're leaving Zix, first pin down what you need to replace: email encryption, broader email security or secure email for a specific kind of practice. The published Zix listing gives no starting price and limited product detail, so comparing fit and cost may take a quote. One sysadmin Reddit thread reports intermittent inbound email and unhelpful updates during an incident; that is a warning to ask vendors about incident communication, not proof of typical reliability.
01Why people leave Zix
Inbound email interruptions
One r/sysadmin thread describes inbound email intermittently working for nearly 24 hours. One report is not a measure of typical uptime, but it raises a continuity question.
Unhelpful incident updates
The same thread says there were no substantive updates beyond “we are looking into it.” Ask vendors how they communicate during service incidents.
Unclear buying costs
The published Zix listing has no starting price and limited product detail, making it difficult to compare cost and fit before requesting a quote.
02The alternatives, ranked by fit
- Broad email security
ProofpointProofpointProofpoint is the closest fit if you want to compare Zix with a broader security portfolio. Its listing highlights email security, data and AI controls, with a starting price of $2.75. That gives buyers a reference point, but the listing says enterprise terms should be negotiated and put in writing before you commit.
Trade-off: Enterprise pricing and exit terms need written confirmation.
6.0/10from
$2.75/mo - Lower-cost business filtering
Proofpoint EssentialsProofpoint EssentialsProofpoint Essentials is worth comparing if your priority is business email security at a lower listed entry price: $1.65. The listing also calls out Active Directory onboarding. That price has an eligibility catch, however, so confirm that you qualify and check what the offer includes before treating it as a like-for-like Zix replacement.
Trade-off: The entry price has an eligibility catch.
6.2/10from
$1.65/mo - Impersonation and malware
INKYINKYINKY is a candidate if your Zix evaluation is centered on broad email protection, especially impersonation and malware. The listing does not give a starting price, so ask for a quote and a written scope. It also flags mixed support reports after Kaseya acquired INKY, making support arrangements a specific item to check.
Trade-off: No listed price; support reports are mixed.
6.6/10from
Custom - API-connected email security
AvananAvananAvanan fits teams looking beyond email encryption to API-connected email security. Its listed strengths include SaaS file and chat inspection and post-delivery remediation. Those capabilities may suit organizations with broader coverage needs, but the listing has no published prices or limits, so request both before comparing it with Zix.
Trade-off: Prices and limits are not published in the listing.
6.7/10from
Custom - Encrypted email and files
VirtruVirtruVirtru is the clearest alternative here if your main reason for evaluating Zix is encrypted email and attachments. Its listing also mentions secure file workflows and regulated-team compliance features. The listed starting price is $119, and the summary warns that entry pricing is steep and price transparency is limited.
Trade-off: Steep listed entry price and limited price transparency.
6.0/10from
$119/mo - Healthcare email and forms
HushmailHushmailHushmail is a more specific fit than a broad security platform: its listing targets healthcare practices needing secure email and small practices collecting signed intake forms. It starts at $9.89. Consider it if those workflows match your needs, but the listing does not recommend it as a first choice for maximum privacy.
Trade-off: Not the first choice for maximum privacy.
6.0/10from
$9.89/mo - Browser-based OpenPGP email
MailfenceMailfenceMailfence is worth a look if you want browser-based OpenPGP email, custom domains and calendar tools rather than a broad email-security portfolio. The listing shows a $2.50 starting price and a free plan. Check the plan details carefully if you need IMAP: the summary says the cheap plan is less compelling for that use.
Trade-off: Less compelling if you need IMAP on a cheap plan.
7.0/10from
€2.50/mofree plan
03Side by side
| Tool | Score | From | Free plan | Best for |
|---|---|---|---|---|
 Zix Zix (current) | 4.7 | Custom | No | Buyers seeking email encryption |
| Proofpoint Proofpoint | 6.0 | $2.75/mo | No | Small businesses seeking email security |
| Proofpoint Essentials Proofpoint Essentials | 6.2 | $1.65/mo | No | Existing Essentials customers seeking lower pricing |
| INKY INKY | 6.6 | Custom | No | Organizations needing broad email protection |
| Avanan Avanan | 6.7 | Custom | No | Teams seeking API-connected email security |
| Virtru Virtru | 6.0 | $119/mo | No | Teams needing encrypted email and attachments |
| Hushmail Hushmail | 6.0 | $9.89/mo | No | Healthcare practices needing secure email |
| Mailfence Mailfence | 7.0 | €2.50/mo | Yes | Browser-based OpenPGP email users |
Questions people ask
Why are people leaving Zix?
The relevant published Reddit evidence is limited to one r/sysadmin thread. It reports intermittent inbound email for nearly 24 hours and a lack of substantive updates. That is a reason to ask about reliability and incident communication, not enough evidence to conclude these problems are typical.
Which Zix alternative has the lowest listed price?
Proofpoint Essentials has the lowest listed starting price among these picks at $1.65, but its entry price has an eligibility catch. Mailfence starts at $2.50 and has a free plan. These are listed prices for different products, not proof of a like-for-like replacement cost.
Which alternative should I consider for email encryption?
Virtru is listed for encrypted email and attachments, while Hushmail is positioned for healthcare practices needing secure email and intake forms. Mailfence offers browser-based OpenPGP email. Compare the workflow you need, then confirm plan limits and pricing with each vendor.