Would it be a wise idea building email marketing app on bubble?

Hello Folks,
would it be a wise idea to build an email marketing and automation app on bubble.io?
especially when a heavy user’s mailboxes integration needed via SMTP/IMAP.
We are building something similar to saleshandy, apollo and lemlist and core feature of the app is same user can connect their mailbox and send automated sequences from our app via sending the mail from their own linked inboxes.

If user connect via google or Microsoft account then its a not issue Oauth works best but what when they use less popular email providers where connection need to establish SMTP?
Also giving 7 day free trial will kill my workload units availability with paid starter plan.

Have you already set this up and tested the WU costs per user?

Do you already have this implemented?

As with any app built on bubble that is to be monetized, it comes down to how much does it cost to operate on Bubble and how much does each user bring into your bank in form of payments. There are a ton of app types that would be considered ‘dead in the water’ if built using Bubble in a legacy data structuring approach due to the high WU costs and consumption of certain types of features. Luckily there are ways to reduce WU costs dramatically, by 95% for fetching data and 99%+ for creating data in bulk that can save a lot of doomed apps as Bubble WU pricing makes it hard for a lot of app types to scale on Bubble using the legacy data structuring approach.

If you have already tested your WU costs for establishing an SMTP and have already setup that entire system, and are looking for ways to reduce the WU costs so as to make the idea viable in Bubble feel free to reach out in a PM to discuss how my paid plugin Data Jedi can make the WU costs dramatically reduced.

However, if you have not set it up already and have not tested the WU costs, I recommend first implementing it and seeing if the costs are high enough to warrant investigating how to reduce them.

Hi @boston85719 thanks for your thoughts. The app is yet in ideation stage but we are on a brink to decide built on bubble or with traditional coding? My main concern for now is SMTP connection where user be able to send campaigns from my app via their email addresses. I attaché a screenshot from other app. I am talking about the last option. How can user connect their smtp and then send campaigns from our tool?
We will also talk on WU but after clarification on first point.