SubsiMail vs. Apollo
Worth saying up front: Apollo is fundamentally a B2B contact database — 275M+ people and companies you can search, filter, and pull into a sequence — with sending bolted on. SubsiMail is just the sending half: self-hosted sequences, tracking, and reply detection for a list you already have. If you need to find prospects, not just email the ones you've got, these aren't really the same category.
Where they actually differ
| SubsiMail | Apollo | |
|---|---|---|
| Core product | Email sequencing tool | Contact database & prospecting platform, with sequencing added |
| Where it runs | Your own server | Apollo's cloud |
| Who can read your list and outbound content | Nobody but you | Apollo's platform, by design |
| Pricing model | Flat, per connected inbox — unlimited team members | Per seat, plus metered credits per contact/phone unlocked |
| Prospecting / data enrichment | Not included — bring your own list | The whole point of the product |
| If you stop paying | App keeps running on your server, all data intact | Account access ends |
Source: Apollo's own pricing page, checked at time of writing. Pricing details change — verify current numbers on their site before deciding.
Where Apollo is actually the better fit
If you don't already have a prospect list and need to build one — searching by title, company size, industry, technographics — that's Apollo's entire reason for existing, and SubsiMail has nothing like it. A common real setup is actually both: source and verify contacts in Apollo, then export them into a self-hosted sender for the outreach itself, so your finished list and reply data don't also have to live on a platform you're paying per seat for.
FAQ
Can I use Apollo to find leads and SubsiMail to email them?
Yes — export contacts from Apollo as CSV and import them into SubsiMail (import guide). Plenty of teams split it this way: a database for sourcing, a self-hosted tool for sending.
Is Apollo's data accurate?
Contact-database accuracy varies by list and region industry-wide; some users report meaningful bounce rates on exported lists, more so outside the US. That's inherent to any prospecting database, not something SubsiMail can speak to since we don't provide one.
Have people reported account issues with Apollo?
Some public reviews describe account suspensions or lockouts (including VPN-triggered ones) that users found hard to resolve through support. We're citing that because it's on the record publicly, not because we've verified each case — judge it against your own risk tolerance for a platform-run account.
Does SubsiMail have anything like Apollo's dialer or Chrome extension?
No. SubsiMail is email sequencing only — no dialer, no LinkedIn prospecting extension, no contact enrichment.